Plantronics M50 Hear it all – music, calls and more. The Plantronics M50™ Bluetooth® headset streams audio from your smartphone and makes every call worry-free with an extended battery life, whispered talk-time alerts and noise reduction features. You can even monitor the battery life automatically on an iPhone so you'll always have time to talk. Streams music and audio from your smartphone; noise and wind resistant for clear calls. Voice alerts tell you talk time, volume, connection, and more.  Up to 11 hours of talk time, up to 384 hours (16 days) of standby time. What's in the Box: headset, ear hook, Micro USB AC Charger, operating instructions. Block noise and wind from calls. Comfortably fits either ear. Pair 2 phones and take a call from either.  iPhone displays headset battery meter.